kfield.jp - robtex.com
kfield.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 1.33.176.42🇯🇵 InfoSphere1.33.0.0/16 INFOSPHERE | ||||||
| PTR | kfield.jp | ||||||
| NS | ns3.sphere.ad.jp ⭐ | ||||||
| A | 202.239.113.22🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE | ||||||
| PTR | ns3.sphere.ad.jp | ||||||
| NS | ns4.sphere.ad.jp | ||||||
| A | 202.239.113.30🇯🇵 InfoSphere202.239.64.0/18 INFOSPHERE | ||||||
| PTR | ns4.sphere.ad.jp | ||||||
| MX | kfield.jp ⭐ | ||||||
| A | 1.33.176.42🇯🇵 InfoSphere1.33.0.0/16 INFOSPHERE | ||||||
| PTR | kfield.jp | ||||||
| TXT | v=spf1 include:fmx.etius.jp +ip4:1.33.176.2/32 +ip4:1.33.176.42/32 -all | ||||||
| SOA | ns3.sphere.ad.jpdns@sphere.ad.jp serial=1576034125 | ||||||
jp
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | z.dns.jp ⭐ | ||||||
| NS | a.dns.jp | ||||||
| NS | b.dns.jp | ||||||
| NS | c.dns.jp | ||||||
| NS | d.dns.jp | ||||||
| NS | e.dns.jp | ||||||
| NS | f.dns.jp | ||||||
| NS | g.dns.jp | ||||||
| NS | h.dns.jp | ||||||
| SOA | z.dns.jproot@dns.jp serial=1784313903 | ||||||
PTR for
MX for
kfield.jp |
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns3.sphere.ad.jp2015-07-24 → 2026-07-17 · 2 obs
● 2026-07-17 19:56:12
●NSns4.sphere.ad.jp2015-07-24 → 2026-07-17 · 2 obs
● 2026-07-17 19:56:12
●MXkfield.jp2015-07-24 → 2026-07-17 · 2 obs
● 2026-07-17 19:56:12
●A1.33.176.422015-07-24 → 2026-07-17 · 2 obs
● 2026-07-17 19:56:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | - |
| kfield.jp | ns3.sphere.ad.jp, ns4.sphere.ad.jp | - |
✅ Authoritative Response
Server:202.239.113.30
NS records: ns3.sphere.ad.jp, ns4.sphere.ad.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kfield.jp (unsigned zone)
⏱️ Timing
Total: 1527ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 1.33.176.42 |
| NS | 2 | ns4.sphere.ad.jp, ns3.sphere.ad.jp |
| MX | 1 | kfield.jp (pri: 10) |
| TXT | 1 | v=spf1 include:fmx.etius.jp +ip4:1.33.17 |
| SOA | 1 | ns3.sphere.ad.jp dns.sphere.ad.jp |
Analysis
Mail Server Role
The MX record for kfield.jp points back to kfield.jp — it is its own mail server.
IP Addresses
kfield.jp directs to one IP number, which is 1.33.176.42.
Name Servers
kfield.jp uses two name servers for its delegation: ns3.sphere.ad.jp and ns4.sphere.ad.jp.
kfield.jp has the same name server delegation as a number of other domains, such as www.k-sankyo-ss.co.jp, syukoukai.com, www.tv-wakayama.net and two more.
There is an overlap in name servers between kfield.jp and other domains, for example sey.jp, titiburomenkamera.saitama.jp and tendo-kankoji.jp
ns3.sphere.ad.jp → 202.239.113.22 and ns4.sphere.ad.jp → 202.239.113.30: one IP number per host name.
Mail Servers
The MX record for kfield.jp points to a single mail server: kfield.jp.
kfield.jp directs to just one IP number, 1.33.176.42.